Oh wow, Airi now has two different people stalking her, just when we thought things couldn't get worse for her.
I think that once Airi realizes she's been tricked by Hinako and no one cares about what happened anymore she'll use her "clinginess" as means of "revenge" and will cause a lot of mental trauma for her. Re-reversal if you may.
^ This, things will definitely NOT be easy on her once she realizes she's been tricked, especially considering how traumatized she was by it all and how much it fucked her life over, I can see something like this happening.
But what I can also see is, like others have already mentioned, Hina finding the camera, which she definitely will, since they're placed on the same spot I believe, and telling Airi all about it without mentioning her own, just to fuck her over even more.
Ichika really doesn't know what she's getting herself into here, lol....